One could argue that maybe it’s a means to get rid of the profit incentive that is inherent with means of communications that has always existed within a capitalistic society…
Like I said, I don't know about Marx, and I don't know what he means by "the means of communication". But for one thing, it seems (from the paragraph above the line you quoted) that he views this as a necessary and temporary evil:
> despotic inroads on the rights of property... unavoidable as a means of entirely revolutionising the mode of production.
And for another, he's also said to have said (in "Comments on the Latest Prussian Censorship Instruction"):
> The real, radical cure for the censorship would be its abolition; for the institution itself is a bad one, and institutions are more powerful than people.
That seems pretty unambiguously against censorship.
> Centralization of the means of communication and transport in the hands of the State.
The state controlling communications doesn't sound very free speech to me.